diff --git a/chart/values.yaml b/chart/values.yaml
index 374bb864083840d893e6039e273deb76585f11a1..b09e80f4eedb4277cc7fea9c681dcdd8a6682595 100644
--- a/chart/values.yaml
+++ b/chart/values.yaml
@@ -1263,7 +1263,7 @@ addons:
     git:
       repo: https://repo1.dso.mil/platform-one/big-bang/apps/collaboration-tools/mattermost.git
       path: "./chart"
-      tag: "7.8.1-bb.0"
+      tag: "7.9.1-bb.0"
 
     # -- Flux reconciliation overrides specifically for the Mattermost Package
     flux: {}